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Shoppers have even seen new growth thanks to this formula.

Shape / Francesca Fasciglione

All eyes are on Simone Biles this 2024 Paris Olympics, and rightfully so.

simone biles featuring k18 hair mask

Photo:Shape / Francesca Fasciglione

Molecular Repair Hair Oil

Nearly 13,000 Amazon shoppers give theK18 Leave-In Molecular Hair Maska five-star rating.

Some customers even found it effective for hair growth.

After just four uses, my hair has never been this long and healthy, said afan.

k18 leave in molecular hair mask

Amazon

Shop theK18 Leave-In Molecular Hair Maskfor $29as well as more restorative hair treatments, below.

k18 molecular repair hair oil

Amazon

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coco & eve hair masque

Coco & Eve

Jennifer Aniston beside a lotion product

A set of images displaying a person in athletic wear and a pair of camo-patterned leggings

Hands touching nails focusing on nail health